ECONOMIC ZOOLOGY ENTOMOLOGY. 763 



Many weevils hibernate iu the field, having been found moving in the fields 

 as early as February in Texas after a mild winter and as early as January 

 30 in Alabama. The average duration of the life cycle during August and Sep- 

 tember is between 7 and 8 weeks. 



The authors found evidence of the occurrence of parthenogenesis. 



The cotton square-weevil of Peru and its bearing on the boll weevil prob- 

 lem in North America, C H. T. Townsend {Jour. Econ. Ent., ^ {1911), No. 2, 

 pp. 2Jil-2Jf8}. — The author has found that the serious affection of cotton in 

 Peru, known for the last 45 years as the " hlelo," is apparently due to a small 

 weevil, Anthonomus vestitus, or n. sp., the habits of which are similar to those 

 of the boll weevil. Since this weevil does not attack the bolls, due to the 

 fact that in Peru squares are always present, the name cotton square-weevil 

 is given to it. 



It is estimated that in Peru the " hielo " has resulted in more damage to the 

 cotton crop than all other causes combined. Numerous weevils were reared 

 from both dried and green squares, both hanging and fallen. The weevil was 

 found to occur commonly and generally, but in limited numbers, throughout the 

 cotton districts of Piura Department during September and October; further 

 investigation shows that it probably occurs throughout the cotton regions of 

 western Peru and Ecuador. It was ascertained that about 23 days elapse from 

 egg to adult during September and October. Search during September and 

 October for weevils feeding and ovipositing in the squares, gave an average 

 everywhere in the cotton region of Piura Department of one weevil to about 

 20 or 25 squares. 



Two species of parasites, probably Bracon sp. and Urosigalphus sp., have 

 been reared in considerable numbers from the weevil larvae in the infested 

 squares. The percentage of parasitism has not yet been determined, but the 

 indications so far are in the neighborhood of 30 per cent and perhaps very 

 much more. In spite of an extended search including a 3 weeks' overland 

 trip into the Andes of southern Ecuador, the author has failed to find the 

 square-weevil on any plant other than cotton. 



Bee keeping in Maryland {Maryland Sta. Bui. 15'f, pp. 227-269, figs. 26).— 

 This bulletin consists of 2 parts. The first, which is by T. B. Symons (pp. 

 227-236), deals with the status of bee keeping in the State; the second, by A. H. 

 McCray, of the Bureau of Entomology of this Department (pp. 237-269), dis- 

 cusses the management of bees. A bibliography is appended. 



A method of securing the fertilization of clover by means of bumblebees, 

 in experiments with Bruchophagus funebris, F. L. "Washbubn {Jour. Econ. 

 Ent., 4 {1911), No. 2, pp. llfO, i^Z)-— The technique is described. 



A new species of Coccophagus with a table of the host relations of those 

 species of the genus known to the writer, L. O. Howard {Jour. Econ. Ent., J}. 

 (1911), No. 2, pp. 276, 277). — C. alMcoxa reared from Physokermes insignicola 

 from Lampoc, Cal., is described as new. 



The larch sawfly in Minnesota, A. G. Ruggles {Jour. Econ. Ent., ^ {1911), 

 No. 2, pp. 171, 172). — The presence of this insect in Minnesota was first noted in 

 August, 1909, though from the dead and dying tamaracks observed it is thought 

 that the pest must have been at work during the 2 or 3 years preceding. The 

 areas of infestation in the State are one at Itaska Park, a second at Cloquet, 

 and a third near Ely. A hymenopterous parasite determined as Diglochis sp. 

 was reared in large numbers, the author estimating that from 10 to 15 per cent 

 of the cocoons were parasitized. In one small area as many as 5 per cent of 

 the 1909 cocoons examined were found to be affected by a fungus disease. 



